Duplicated code fragment
Reports duplicated blocks of code from the selected scope: the same file or the entire project.
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
DuplicatedCode- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
The inspection features quick-fixes that help you to set the size of detected duplicates, navigate to repetitive code fragments, and compare them in a tool window.
The inspection options allow you to select the scope of the reported duplicated fragments and set the initial size for the duplicated language constructs.
Inspection options
Here you can find the description of settings available for the Duplicated code fragment inspection, and the reference of their default values.
- Show duplicates from
Option ID:
restrictedDuplicateScopeDefault value:
EverywhereOther available settings:
Same file
Suppressing Inspection
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
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By default bundled with: | CLion 2025.2, GoLand 2025.2, IntelliJ IDEA 2025.2, PhpStorm 2025.2, PyCharm 2025.2, Qodana for Go 2025.2, Qodana for JS 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, Qodana for Ruby 2025.2, RubyMine 2025.2, WebStorm 2025.2 |